423251660 has 48 divisors (see below), whose sum is σ = 958741056. Its totient is φ = 156026112.

The previous prime is 423251639. The next prime is 423251683. The reversal of 423251660 is 66152324.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262577 + ... + 264183.

It is an arithmetic number, because the mean of its divisors is an integer number (19973772).

Almost surely, 2^423251660 is an apocalyptic number.

It is an amenable number.

423251660 is an abundant number, since it is smaller than the sum of its proper divisors (535489396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423251660 is a wasteful number, since it uses less digits than its factorization.

423251660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 423251660 is about 20573.0809554622. The cubic root of 423251660 is about 750.8149127541.

The spelling of 423251660 in words is "four hundred twenty-three million, two hundred fifty-one thousand, six hundred sixty".